Thanks Mechta - yes the rather 'relaxed' parachute arrangements in the Chipmunk AEF days is something I had forgotten.
VX275 - Thanks also. I wasn't aware the Blower Tunnel was going; should have realised, given how much has been shut down, sold off. That is an interesting and disappointing oversight; I wonder why the Grob canopy was not tested. Viewed as too simple to warrant it, perhaps?
And ACW VGL - delighted to hear that. I too get paranoid and obsessive about such things...